Signals scout: setup health Agent Skill

Signals scout over PostHog's own health checks.

Context cost
5.8k tokensestimated from the bundle, loaded when it triggers
Bundle
1 file · 23.4 kBtext throughout, nothing executable
Licence
MITthe author’s own terms
Last change
—no release on file
Servers it uses
Noneruns standalone

What it does

Signals scout over PostHog's own health checks. Bundles the project's active health issues by kind, weights them by blast radius, and surfaces the ones worth acting on.

What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.

analytics

The skill itself

A skill is instructions the model reads, so you can see what you are getting: below is the start of its SKILL.md. The front matter loads with every session, the body loads when the skill triggers, and the whole file comes with the install.

SKILL.md23.4 kB · preview
--- name: signals-scout-health-checks scout-display-name: Health checks compatibility: > PostHog Signals agent (Claude sandbox). Read-only analytics + signal_scout_internal:write (scratchpad) + signal_scout_report:write (report channel), plus the health-issues read tools and analytics tools in the MCP tools section. allowed_tools: - emit_report - edit_report metadata: owner_team: signals scope: health_checks ---
19# Signals scout: setup health
20
21You are a focused setup-health scout. PostHog runs its own scheduled health checks and persists what they find as **health issues** — each with a kind (which check found it), a severity (critical / warning / info), a status (active / resolved), and a check-specific payload. Your job is **not** to re-run those checks; it's to read the active issues and decide which are genuinely worth a reviewer's attention, then file a small number of well-framed reports. The checks are the cheap deterministic detector; you are the judgment layer on top.
22
23**Your discriminator is kind-concentration × severity × agent-fixability × persistence — not the raw firing count.** A single critical issue is a finding. Eighty warning issues of the _same_ kind are _one_ finding about a systemic problem, not eighty. An issue an agent can fix via the MCP is more actionable than one needing human-held credentials. An issue that has been active across several runs (not auto-resolved) is real; one that flickers active/resolved is transient noise. Internalize that shape — filing one report per issue is exactly the noise this scout exists to avoid.
24
25**Calibration.** On a busy project the active-issue list collapses hard under this logic — hundreds of issues into a handful of findings. A large external_data_failure set usually reduces to a few shared causes, such as one invalidated replication slot behind many syncs, or a date-partitioned source regenerating the same "table not found" failure daily. Much of a large materialized_view_failure set is abandoned personal dev models nobody will fix. Raw count is dominated by cascades and stale experiments; bundle by root cause and weight by who can actually act, or the inbox drowns. This is the discriminator working as intended, not an edge case.
26
27You author reports directly via the report channel (scout-emit-report / scout-edit-report): you've done the research, so you own each report 1:1 end-to-end rather than firing weak signals for a pipeline to cluster. The bar is correspondingly high — file a report only for a well-framed finding (one root cause, one bundled cluster, or one confirmed critical) you'd stand behind as a standalone inbox item a reviewer will act on. A finding the inbox already covers that's still active (or a cluster whose count grew) is an **edit**, not a new report. The harness prompt carries the full report-channel contract (fields, status mapping, reviewer routing, dedupe, the priority / repository fields, and the edit rules), and authoring-scouts → references/report-contract.md is the deep reference (readable in-run via skill-file-get); this body adds only the health-checks-specific framing — do not restate the generic mechanics.
28
29## Quick close-out: is anything actually wrong?
30
31Call health-issues-summary first — it returns total active non-dismissed issues plus breakdowns by_severity and by_kind in one cheap read. If total is 0, the project's setup is healthy right now. Write one scratchpad entry and close out empty:
32
33- key: pattern:health:clean-team{team_id}
34- content: "0 active health issues at {timestamp}"
35
36Re-running rewrites the entry in place, so it stays a cheap cold-start short-circuit until something fires.
37
This is a preview of SKILL.md. Download or install the skill to get the whole thing.
In the file
SKILL.md3,299 words
Files1
LicenceMIT
Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈150
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
5,700
on trigger
The instruction body, read only when the skill fires.
2.9%
of a 200k window
Ten skills this size would take about 29% of the window before you open a file.
050k100k150k200k context window

5.8k tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Heavy. Teams tend to install this one per project rather than globally, and load it only when the job comes up.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

The procedure it runs

The procedure has not been set out here step by step. It is in the body of its SKILL.md: the start of it is shown above, and the whole file comes with the install.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

It writes no files and reaches no network. All it changes is how the model reasons and writes.

What it asks for
Writes filesno
Network accessno

Read from the allowed-tools line of this skill’s own SKILL.md. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

What is in the bundle

1 file, 23.4 kB on disk. A bundle is text throughout: the instructions the model reads, plus the templates it fills in.

  • SKILL.md23.4 kB
What is not in it

No dependencies and nothing executable: a skill is text the agent reads, so the bundle is 1 file you can review in full before installing. The MIT licence covers the templates and examples as well as the instructions.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# Signals scout: setup health · 5.8k tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/signals-scout-setup-health/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/signals-scout-setup-health" ] && { [ ! -e .claude/skills/signals-scout-setup-health ] || { mv .claude/skills/signals-scout-setup-health "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/signals-scout-setup-health" .claude/skills/ && echo "Installed .claude/skills/signals-scout-setup-health"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add posthog/signals-scout-setup-health

Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/signals-scout-setup-health/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/signals-scout-setup-health/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/signals-scout-setup-health" ] && { [ ! -e ~/.claude/skills/signals-scout-setup-health ] || { mv ~/.claude/skills/signals-scout-setup-health "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/signals-scout-setup-health" ~/.claude/skills/ && echo "Installed ~/.claude/skills/signals-scout-setup-health" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/signals-scout-setup-health/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where. It appears as signals-scout-health-checks in Gemini CLI, Codex, Copilot and Grok (its own name); Claude Code lists it by the folder name, signals-scout-setup-health.

Which clients pick it up on their own

A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.

Claude Code.claude/skills/
Claude DesktopCustomize › Skills
ChatGPTSkills › Create › Upload
Cursor.cursor/skills/
VS Code.github/skills/
Codex CLI.agents/skills/
Gemini CLI.gemini/skills/
Grok Build.grok/skills/
Microsoft CopilotSkills › Upload a skill
PerplexityComputer › Skills › Upload a skill
DeepSeek Harness.dsh/skills/
Zed.agents/skills/
Devin Desktop.devin/skills/
Windsurf (legacy).windsurf/skills/
OpenAI Agents SDKInstructions or sandbox Skills
HTTP / APIa request parameter
This release
Versionnot versioned
Publishedno release date on file
PriceFree
Referenceposthog/signals-scout-setup-health

Versions

Its author publishes no version number, so there is nothing here to pin to: what you install is the folder as it stands today. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

Pinning

Nothing to pin to: this skill carries no version number of its own. What you install is what the folder holds on the day you install it.

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